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Animal Breeding and Genetics
Asian-Australasian Journal of Animal Sciences 1994;7(1): 119-124.
DOI: https://doi.org/10.5713/ajas.1994.119    Published online March 1, 1994.
Differential expression of ornithine decarboxylase and ha-ras cellular oncogene during development of the female rat
M. G. Baik, C. S. Park
Experiments were performed to determine age-associated changes in ornithine decarboxylase (ODC) gene and Ha-ras cellular oncogene expression in tissues of female rats. In the kidney, ODC mRNA levels did not show age-associated changes, while ODC enzyme activities were decreased with advancing age from 3 to 10 months. These results suggest that post-transcriptional mechanism (s) are involved in the age-dependent decrease in renal ODC enzyme activity. In addition, we found no correlation between testosterone-induced renal ODC expression and DNA methylation pattern. Ha-ras mRNA levels in brain decreased as animals aged from 3 to 6 months, while renal Ha-ras mRNA levels were not influenced by age. Results demonstrate the age-dependent expression of Ha-ras in a tissue-specific manner.
Keywords: Ornithine Decarboxylase; Ha-ras; DNA Methylation; Rats
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